Immunity here, immunity there

The story of Blackwater just gets murkier and murkier:

WASHINGTON - The State Department promised Blackwater USA bodyguards immunity from prosecution in its investigation of last month's deadly shooting of 17 Iraqi civilians, The Associated Press has learned.

As a result, it will likely be months before the United States can — if ever — bring criminal charges in the case that has infuriated the Iraqi government.

"Once you give immunity, you can't take it away," said a senior law enforcement official familiar with the investigation.

It looks like anyone and everyone who gave Bush money gets automatic immunity from any crime, no matter how heinous. Of course, then there are the rest of us.

What in God's name would have possessed the State Department to offer immunity immediately in the wake of this horrendous crime?